What does it mean to say "A between-groups effect size of .6 was achieved for the treatment group as compared to the no-treatment group"?
A)The group getting the treatment was .6 standard deviations higher on the outcome.
B)The group getting the treatment was .3 standard deviations higher on the outcome.
C)Both groups improved, but the no-treatment group showed a greater increase in scores.
D)All of the above.

Question

Quizplus · Accepted Answer

The term "between-groups effect size" means comparing the difference in scores or outcomes between two groups. An effect size of .6 indicates that the treatment group was .6 standard deviations higher on the outcome than the no-treatment group.

What Does It Mean to Say "A Between-Groups Effect Size